This question exists because it has historical significance, but it is not considered a good, on-topic question for this site, so please do not use it as evidence that you can ask similar questions here. This question and its answers are frozen and cannot be changed. More info: help center.

Perl Training Australia have an excellent set of course notes for learning perl at http://perltraining.com.au/notes.html. These are the notes they use in their courses, but they're available for free download and use.